Keywords:
Acoustic properties and phenomena, Acoustic signals, Acoustics, Active, Audio, Audio signals, Compensation, Definitions, Ear muffs, Ear protectors, Ear-muff type wearing protectors, Hearing protector, Information, Inspection, Level control, Marking, Noise, Noise abatement, Noise control, Noise reduction, Occupational safety, Protective clothing, Protective equipment, Reduction, Safety, Safety engineering, Safety requirements, Sound, Sound insulation, Sound intensity, Sound levels, Sound pressure level, Sound reproduction, Specification (approval), Test apparatus, Testing, Workplace safety